PERT and CPM – 4- For Beginners – Basics – 4 – Dangling

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Common Errors in Drawing Networks
The three types of errors are most commonly observed in drawing network diagrams
1. Dangling
To disconnect an activity before the completion of all activities in a network diagram is known as dangling.

2. Looping or Cycling
Looping error is also known as cycling error in a network diagram. Drawing an endless loop in a network is known as error of looping.

3. Redundancy
Unnecessarily inserting the dummy activity in network logic is known as the error of redundancy.

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